baber/WOPTO huggingface dataset:
Patent GB-1307484-A (GB)
Title: Diperoxyketals
IPC: C08F36/04
Filed: 1971-05-19
Abstract: 1307484 Diperoxyketal initiators; foamed cured elastomers PENNWALT CORP 19 May 1971 [3 June 1970] 15799/71 Headings C3C and C3P The free-radical polymerization of ethylenically unsaturated monomers or the free radical cross-linking or curing of polymers or polymer compositions is initiated by a diperoxyketal of the formula  wherein R<SP>1</SP> is a C 1-4  alkyl radical or a radical of the formula  each R 1  is a C 4-7  t-alkyl or t-cycloalkyl radical or a C 9-20  t-aralkyl radical or together they form a C 6-12  alkylene radical having a t-carbon atom at each end, R 2  and R 3  each represent hydrogen atoms or C 1-4  alkyl, C 3-7  cycloalkyl, C 1-4  alkoxy, C 3-7  cycloalkoxy, phenoxy, substituted phenoxy, C 7-16  aralkoxy, C 1-4  acyloxy or C 6-12  aroyloxy radicals, provided that both are not hydrogen atoms, R 4  is as defined for R 2  and R 3  with the proviso that it can only be hydrogen when R is other than methyl and R 5  and R 6  are each hydrogen atoms or C 1-4  alkyl groups. Specified ethylenically unsaturated monomers are olefins, vinyl esters, unsaturated nitriles, acrylic and methacrylic acids and their esters and amides, maleic anhydride, maleic and fumaric acids and their esters, vinyl halo and vinylidene dihalo compounds, perhalo-olefins, vinyl ethers and acrolein. The diperoxyketals of the above formula may be used to initiate the curing of unsaturated polyester compositions and the curing, with or without foaming, of elastomers. The polyester compositions may comprise polyesters obtained by esterifying ethylenically unsaturated di- or poly-carboxylic acids or their anhydrides with polyalcohols, the unsaturated acids optionally being partly replaced by saturated carboxylic acids, and unsaturated monomers such as styrene, vinyltoluene, methyl methacrylate, diallyl phthalate, dibutyl fumarate, acrylonitrile, triallyl cyanurate, α-methyl styrene, divinyl benzene, methyl acrylate, diallyl maleate, n-butyl methacrylate or ethyl acrylate. Specified elastomers are ethylene-propylene copolymers and terpolymers, polyethylene, ethylene-vinyl acetate copolymers, silicon rubbers and styrene-butadiene rubbers. For the production of foamed elastomers, specified blowing agents are azobisformamide, diazoaminobenzene, N,N<SP>1</SP> - dinitrosopentamethylenetetramine, N,N<SP>1</SP> - dimethyl - N,N<SP>1</SP> - dinitrosoterephthaladine, p,p<SP>1</SP> - oxy - bis - (benzene sulphonyl semicarbazide), azobis (isobutyronitrile), p,p<SP>1</SP>-oxybis - (benzene sulphonyl hydrazide), p,p<SP>1</SP>-diphenyl - bis - (sulphonyl hydrazide), benzene sulphonyl hydrazide and m-benzene-bis-(sulphonyl hydrazide) and solvent blowing agents, a number of hydrocarbons and halohydrocarbons being specified. Examples illustrate (1) the cross-linking of a polyester resin derived from maleic anhydride, phthalic anhydride and propylene glycol, (2) the bulk polymerization of styrene, (3) the polymerization of vinyl acetate, and (4) the curing of an ethylene-propylene terpolymer in the presence of 2,2<SP>1</SP>-azobis-(isobutyronitrile) as blowing agent in Example VI.
Patent GB-456539-A (GB)
Title: Method of and means for joining the ends of belting
IPC: F16G7/00
Filed: 1935-05-31
Abstract: 456,539. Belt-fastenings. REDFERN, H., 31, Charles Street, Manchester. May 31, 1935, No. 15843. [Class 80 (i)] A belt-fastening, more especially for a fabric- and-rubber V-belt, comprises a pair of flexible liners such as springs b, each inserted in a longitudinal passage d in each end of the belt and having a close spirally-grooved interior surface to engage a flexible connecting member, such as a spring c, having a spirally-grooved exterior. Instead of the springs b, c, thin metal liners threaded internally or both internally and externally and adapted to engage a screwthreaded flexible rod may be employed. The internal passage d may extend the whole length of the belt. According to the Provisional Specification, the liner may extend the whole length of the belt, and the connector may have right-hand threads at one end and left-hand threads at the other.
Patent GB-164361-A (GB)
Title: Multiple fuse
IPC: H01H85/26
Filed: 1921-06-08
Abstract: 164,361. Szykier, J. June 9, 1920, [Convention date]. Fusible cut-outs.-A magazine fuse plug comprises a rear member I having a cylindrical part c forming a pivot, a median member II carrying fuses and rotatable on the pivot c, and a cap member III which has internal bushing e screwing upon a central bolt to secure the parts together. The fuses are arranged in bores f between contact members h<1>, h<11> and the contacts h<1> engages holes in a contact plate b upon the rear member 1. The latter has a screw plug a and a contact k connected to the central bolt. The cap III carries a resilient switch arm i which engages the upper fuse contacts h<11> in turn as the median member II is rotated. A discharge orifice p is provided in the cap. The median member II is renewable and the size of the pivot c is varied with the capacity of the fuses so that an unsuitable median member cannot be fitted. The external diameter of the member II exceeds that of the members I and III.
Patent GB-900862-A (GB)
Title: Improvements in and relating to poultry drinking bowls
IPC: A01K39/022
Filed: 1960-05-05
Abstract: 900.862. Poultry drinking bowls. INNES WALKER (ENGINEERING) CO. Ltd., and INNES, G. L. May 3, 1961 [May 5, 1960], No. 15970/60. Class 5(2). A poultry drinking bowl comprises a cylindrical valve body 10 connected to a water supply conduit 10a and provided with a threaded member 11 having a small bore 12 at the upper end of which seats a valve 13 carried by a stem 14, a spring 15 encircling the stem and bearing on the member 11 and a sphercial head 16 carried by the stem. The body 10 is closed by a screw plug 19 through which passes a spindle 17 carrying a finger 18 to engage the head 16 and being biased upwardly by a spring 21. The plug 19 is formed with a flat portion 23 so that a passage 24 is formed between the plug and body 10. A synthetic resin bowl 25 is clamped between a locking ring 28 and a weight 27 carried by the spindle 17. When water is removed from the bowl the spindle 17 moves upwardly due to the action of the spring 21 and the finger 18 co-operates with the head 16 to tilt the stem 14 and valve 13 so that water may flow through the body 10 and passage 24 into the bowl. The bowl then drops slightly and the valve stem 14 and valve 13 return to the closed position under the action of the spring 15.
Patent GB-946566-A (GB)
Title: Improvements in or relating to an apparatus for converting a high sided open wagon into a closed wagon
IPC: B61D39/00
Filed: 1960-05-05
Abstract: 946,566. Vehicle sliding roofs; covers. COMPAGNIE INDUSTRIELLE DE MATERIEL DE TRANSPORT AND ATELIERS DE CONSTRUCTIONS MECANIQUES DE FOREST. May 5, 1960 [May 6, 1959], No. 15993/60. Headings B7J and B7L. [Also in Division E2] Apparatus for converting a high-sided open railway wagon into a closed wagon comprises a cover formed by means of thin narrow metal interengaging plates which are cambered so that the cover when extended has a vaulted convex shape, a roller 57, Fig. 2, connected to one end of the cover and rotatable to wind the latter up in itself, a storage box 56, Fig. 1, within which the roller 57 is mounted and which is arranged for mounting on one fixed end wall of the wagon, and a closure crosspiece 53 arranged for mounting on the other end wall 52 and to bear against the other end of the cover when it is unwound from the roller 57 and extends over the top of the wagon. The box 56 and crosspiece 53 are connected by longitudinal rail members 60 secured to the tops of the wagon sides 50 and in which the side edges of the cover run. Chain wheels 54 on the ends of the crosspiece are connected by endless chains 61 with chain wheels 59 in the box 56, the chains being connected with the free end of the cover. The wheels 59 and the rollers 7 are selectively rotatable by hand-operated mechanism from either side of the wagon, to close and open the wagon top, respectively. The mechanism, Figs. 2 and 3, comprises a transverse shaft 63 having rotatably mounted thereon sleeves 66, 67 which are selectively drivable by the shaft 63 by operating a clutch member 65 from either side of the wagon by a rod 87. The sleeve 67 is connected through chain wheels and chains with a chain wheel 80 on the roller 57, whilst the sleeve 66 is similarly connected with a chain wheel 75 on a shaft 58 connecting the wheels 59. The shaft 63 has a handle 64 at each end but can be operated from a lower level by handles 85 when desired.
Patent GB-272933-A (GB)
Title: Improvements in or relating to electrical resistance furnaces
IPC: H05B3/62
Filed: 1927-06-15
Abstract: 272,933. Metallwerk Plansee Ges., and Schwarzkopf, P. June 16, 1926, [Convention date]. Resistance furnaces.-The heating element 4 of a resistance furnace consists of tungsten or a tungsten alloy, molybdenum or a moybdenum alloy, or wolfram and is embedded in a layer 5 of charcoal to prevent oxidation thereof. Wood charcoal in powdered form is preferred and it may be mixed with oxides of calcium, magnesium and aluminium. The furnace may comprise a quartz or zirconia crucible 1 carrying a resistance wire and mounted in a casing 2 of kieselguhr or chamotte embraced by a cast iron ring 3 and adapted for tilting. A cast iron cover 6 of annular form is provided. Charcoal may be added when required by means of a hopper 7 fitted with a cock 8. A stationary furnace comprises a wound tube arranged in a chamotte trough.
Patent GB-1419329-A (GB)
Title: Universal joint for conveyor chains
IPC: B65G17/38
Filed: 1973-04-04
Abstract: 1419329 Chains A & H JONES & CO Ltd 25 March 1974 [4 April 1973] 16049/73 Heading F2Q In a universal joint 10 connecting two pairs of links 11, 12 of a conveyer chain, a pin 13 is journalled in the bight portion of a U-shaped member 15, a pin 14 is journalled in a part cylindrical sleeve 21 of C-section which extends transversely of and through the limbs 17 of the U, and incorrect assembly of the joint, as shown in Fig. 2, is prevented by projections 20 formed on the edges of the limbs 17. Alternatively, at least one of the conveyer links may be provided with a projection which prohibits incorrect assembly of the joint.
Patent GB-624233-A (GB)
Title: Improvements in or relating to electrical induction apparatus such as transformers
IPC: H01F27/25
Filed: 1947-06-18
Abstract: 624,233. Transformers and inductances. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. June 18, 1947, No. 16050. Convention date, July 9, 1946. [Class 38 (ii)] Electric induction apparatus (e.g. a transformer) has a wound magnetic core loop, comprising two abutting U-shaped parts, of which at least two opposite sides are slightly outwardly curved to prevent distortion and consequential noisy operation thereof. A sheet steel strip with a best magnetic direction in the direction of rolling is wound on a mandrel to form a loop having two of its sides outwardly curved (the offset X being normally about 2 per cent of the mean curved length), annealed to relieve strains, vacuum impregnated with a thermoplastic or thermosetting resin material and cut at the centre of the legs along the lines 41, 42. The faces of the U- shaped portions are worked smooth, etched to remove burrs, a suitable resin applied to the faces and a band 43 passed around the core to clamp the two parts together. The forces E, El acting at the joint are not diametrically opposed and have a small outward resultant Ell which prevents the core from distortion by inward movement of the laminµ such as might open the joints and provides a stable core member capable of operating up to a temperature of 100‹ C. A three-phase core may be constructed by arranging two core loops 51, 52 inside a loop 53 and clamping the assembly together by a band 54. Reference has been directed by the Comptroller to Specification 628,511 [Group XII],
Patent GB-117013-A (GB)
Title: Improvements in Ankle-joints for Artificial Legs.
Inventor: ERNST EMIL
IPC: A61F2/66
Filed: 1917-11-03
Abstract: 117,013. Ernst, E., and Tulett, A. Nov. 3, 1917. Hinges; hinge-pins. - An ankle-joint for artificial legs comprises a perforated hollow spindle C<1> on which the foot and leg members B<1>, B<2>, A<1> of the joint are secured by means of end caps c<2>, Partial bush linings D adjustable by screws are fitted to the bearings and have tags d<2> engaging slots in the bearings to keep the linings in place.
Patent GB-789237-A (GB)
Title: Improvements in luminescent materials
Inventor: WELLS ROBERT STIRLING
IPC: C09K11/74
Filed: 1955-06-06
Abstract: 789,237. Luminescent materials and processing. BRITISH THOMSON-HOUSTON CO., Ltd. June 4, 1956 [June 6, 1955], No. 16208/55. Class 39(1). A luminescent material comprises a manganese-activated zinc arsenate phosphor, giving an efficient red luminescence when excited by short wave-length ultra-violet radiation or cathode rays. The material may contain in addition the element chlorine, with or without magnesium, at least some of the magnesium forming a mixed arsenate with the zinc. The molecular ratio of ZnO or ZnO + MgO to As 2 O 5  should lie between 6 : 1 and 3 : 1 and should preferably be 4: 1. The amount of MnCl 2  4H 2 O or MnCO 3  used to introduce the activator should lie between 0À03 mol. and 0À4 mol. per 100 mol. of ZnO or ZnO+MgO and should preferably be about 0À2 mol. Not more than 50 per cent of ZnO should be replaced by MgO on a molecular basis. The raw materials, for example ZnO, MgO, As 2 O 5  and MnCl 2  or MnCO 3 , are mixed together and dried in an oven at 105‹-120‹C. and then fired for about 5 minutes at 700‹-1100‹C. in an atmosphere of air. When cool the soft powder is mixed and fired in silica crucibles for 10 minutes to 2 hours or so (according to quantity) at 920‹-1120‹C. according to the ZuO : As 2 O 5  ratio. After cooling, the crucible charge can be powdered by milling and sieved.
Patent GB-355691-A (GB)
Title: Improvements in or relating to electrical signalling systems
IPC: H04Q1/446
Filed: 1930-05-26
Abstract: 355,691. Signalling on telephone circuits. AUTOMATIC TELEPHONE MANUFACTURING CO., Ltd., Strowger Works, SMITH, J., 9, Merivale Street, Durning Road, both in Liverpool, and TURTON, G. D., Warden House, Greenwich, Ripley, near Derby. May 26, 1930, No. 16229. [Class 40 (iv).] In a system for signalling over a two-wire conductor, including valve repeaters, the signal is transmitted by a predetermined number of pulses of audio frequency within the voice frequency range, the pulses being transmitted under control of a timing device. To ring over the line 12, 13, ringing current is received over 10, 11, operating RR, and relay A operates and locks to 1a of CS. Relay C energizes and B pulls up. Relay C connects current of 500 frequency to the line 12, 13 and also energizes magnet CSM. Relay B breaks the circuit of C and, after a slow release pause, C falls away releasing CSM and opening the line circuit. Slow relays B and C interact connecting pulses to line and stepping CS. When 10 pulses have been sent, 1a leaves the commoning and A releases, breaking the circuit of C and allowing CS to home. At the receiving end the pulses pass via filter FC to the valve amplifier VAC and energize relay E. The pulses are thus repeated to F and, as G locks up for the impulse train, switch RS is stepped. When the ten pulses have been received, CR energizes and locks over 14 to contacts of a reply relay, connecting ringing current to the conductors 15, 16. Relay G relapses and switch RS returns to its home position. If during speech the ringing frequency is received, relay F will respond, energizing G and moving switch RS. The receipt of 10 impulses of the selected frequency at the correct time spacing is however almost impossible, and G will relapse before CR is energized allowing RS to return to normal.
Patent GB-623984-A (GB)
Title: Improvements in or relating to pads of continuous stationery
IPC: B41L1/24
Filed: 1947-06-19
Abstract: 623,984. Manifolding pads. SMITH & SON, Ltd., W. H., and SEXTON, F. G. June 19, 1947, No. 16253. [Class 16] In a pad 1 of continuous stationery of the kind In which a strip or strips 2, 3 of paper are folded zig-zag, the strips usually being weakened along folds 4, each strip is provided with a longitudinally extending line of weakening 5 adjacent to one edge, and the edge portions of the successive layers of the strips outside the lines 5 are secured together, e.g. by adhesive or staples 6, to form a stub 7 from which the strips may be removed by tearing along the lines 5. The strips may be provided with feeding perforations 8 ; alternatively, holes may be provided near the leading edge of each form length. In use, the pad is inserted in the supply compartment of an autograph register, the stubs being gripped by a clip therein.
Patent GB-320366-A (GB)
Title: Improvements in automatic telephone systems
IPC: H04Q3/00
Filed: 1928-07-10
Abstract: 320,366. Betulander, G. A. July 10, 1928. Automatic exchange systems. - In a cross - bar switch which serves as a 100-point group selector or connector, the primary magnets ANV operate successively in response to an incoming train of impulses, and then the secondary magnets ANS operate either automatically or in response to a further impulse train to close the contact-sets of the selected group in turn until an idle trunk is found or the wanted line is reached. Each magnet on energization disconnects the preceding one, but in order to prevent two lines or trunks being connected during the successive operation of the magnets ANS, the wires leading to the odd and even contact-sets are multipled together separately. Once the required connection has been made, the contact-set is held operated by the secondary magnet ANS alone, the primary magnet ANV being released. Specification 13524/14 is referred to. Group selector, Fig. 1. Relay AR energizes over test wire LIII, and impulses are received over wire LII. The first impulse energizes magnet ANVO, which locks in series with relay IVRI, and parallel relay SMR, which remains operated throughout the train. At the second impulse, magnet ANV1 energizes and locks over relay IVR2, which disconnects magnet ANVO and relay IVR1. Relay HIVR pulls up. At the third impulse, magnet ANV2 energizes and locks over relay IVR1, which releases magnet ANV1 and relays IVR2, HIVR. This action continues until the end of the train, relay IVR1 energizing for the odd impulses, and relays IVR2, HIVR for the even impulses. Parallel relay SMR then falls back, and magnet ANS1 energizes, operating the first contact-set in the selected group. Test relav SR now connected to the test wire of the outgoing trunk is inoperative if it is busy, and magnets ANS2, ANS3, &c. energize in turn until an idle trunk is reached, each magnet disconnecting the previous one, when relay SR pulls up and opens the circuit for the next magnet. Switching relay ALR energizes, locks in series with the operated secondary magnet ANS, disconnects the operated primary magnet ANV, and connects in the high resistance winding of relay AR to decrease the holding current. Connector, Fig. 2. Relay AR energizes over test wire LIII, and the first train of impulses operate magnets ANV in turn as in the group selector. When parallel relay SMR falls back, change-over relay SVR energizes over its upper winding, closes a locking circuit through its lower winding and the operated magnet ANV, and transfers the control wires to magnets ANS, which are operated in turn by the final train of impulses until the desired contact-set is operated. When relay SMR falls back, test and switching relay LYR is connected to the test wire of the wanted subscriber and energizes if the line is free and completes the connection, the operated secondary magnet ANS being locked in series with relay IVR1 or IVR2, and the operated primary magnet ANV being released.
Patent GB-677035-A (GB)
Title: Improvements in or relating to gas and/or vapour filled electric discharge tubes
IPC: H01J61/54
Filed: 1950-06-29
Abstract: 677,035. Glazing composition. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 29, 1950 [July 2, 1949], No. 16268/50. Class 56. [Also in Group XL (a)] A low melting-point glaze used in the manufacture of a starting strip for an electric discharge lamp has the composition 80.8 per cent PbO, 16.4 per cent B 2 O 3  and 2.8 per cent SiO 2 .
Patent GB-974369-A (GB)
Title: Data transfer system
IPC: G06F3/06
Filed: 1962-04-30
Abstract: 974, 369. Digital data storage. INTERNATIONAL BUSINESS MACHINES CORPORATION. April 30, 1962 [May 10,1961], No. 16400/62. Heading G4C. Between a magnetic tape 11 and a utilization device 100 are three registers, typified by flipflops 34, 45 and 65, through which data is passed to take up momentary differences between the rates at which data is being read from the tape and is being accepted by device 100. The bits are statized in register 14 and open gate 22 to start a clock 20. At the 7-count gates such as 30 are opened and the data is transferred to the first register 35, the transfer setting a trigger 36. A fixed time after an and circuit 37 has operated trigger 36 is reset and gate 50 opened to transfer the data to the second register 45. The operation of and circuit 37 also sets trigger 46. The other input of and circuit 37 is from trigger 46 delayed and inverted. Trigger 46 is reset when a transfer takes place from register 45 to register 65 due to gate 60 being open. Gate 60 is opened by or circuit 66. Circuit 66 is normally activated by and circuit 67 which is energized by the presence of data in register 45 and the arrange ment of multivibrators 75 and 77 of which 75 is normally up and 77, down. They both have positive inputs to and circuit 67 a fixed time after the last data bit has passed through register 65. Their action can, however, be over-ridden by and circuit 69 if there is data in registers 35 and 45 and the clock is as S-count, indicating that the data in register 35 is about to be destroyed.
Patent GB-1217526-A (GB)
Title: Photographic camera having exposure time control and indicating means
Inventor: HABERLE KARLHEINZ
IPC: G03B7/083
Filed: 1968-04-05
Abstract: 1,217,526. Exposure control. EASTMAN KODAK CO. April 5, 1968 [April 5; 1967, No.16417/68. Heading G2A. A light-sensitive resistor 2 is connected to the base of a transistor 1 which is in circuit with a measuring instrument 3, so that the instrument indicates the expected exposure time. When the camera shutter release is pressed, switch 6 is closed, and switch 7 moved from the full-line to the broken-line position. Light-sensitive resistor 2 is now connected in series with a capacitor 8 across the power supply terminals 14, 15, so that the capacitor charges up at a rate determined by the lighting conditions. When a predetermined capacitor voltage is reached, a trigger device 9 is actuated to de-energize a holding electromagnet 10 to release the shutter and end the exposure. The resistor 2 and capacitor 8 are isolated from the instrument 3 by the high resistance base circuit of the transistor, so preventing discharge of current through the instrument. In an alternative circuit arrangement, Fig. 2, (not shown) a diode (16) is used instead of transistor 1 as the blocking means for isolating the instrument 3.